Extension-fitting for leveling-rods.



No. 707,225. Patented Aug. I9, I902. a. s. GOODAL-E.

EXTENSION FITTING FOR LEVELING RODS;

' (Application filed Dec. 9. 1901.

(No Model.)

Save/n cer autumn t eling-rod appeating in realelevation; Zis a section on. line 220i Figul, the level- Thisyinventio relateslto a G O E is 1 oD At-E, for Ho GH'To Be it known that' I; GEORGE S..

others'skilledin thearttowhich v I "n extension-rod fitting for, civil engineers "leveling-rods. i

'ith this and? other objects in View; which he comp nyi d i gs, in Figure l is a section through the ,pants of the fitting on line 1-1 ofFig. 2,th'e backJ1ev"-.

ing-rodsappearingin side eleva'tion w ith the frontrod partly broken awaytof expose the j'fastenings securing the casing thereto.- Fig.- 3 3 is a viewof the cover-plate; and Fig. tie a detail View of the clampin'g collar-and ser'ewJ In theldrawings, 1 denotes the frontleveb TFO the rod l is fixed. a caslng shown) upon its buter'jfacei' f ing-ro d; and2, the back leVeliug-roithe latter being provided in' practice [with a scale (not j open ati'ts upper-endantfo utergide and is' (providrdwitha coverorpiatei, which closes said outer side. 'This iplate is provided with h an observation-opening and a scalefi to cog operate with thescaie upon the back rod 2 v I I may befresorted to withoufldeparting from vthe principle orsacrificing anyof the advan through the said visual opening 5. The rod2 is mounted to'slide casing 3 and is euoon'lpassed by a collar 7, carrying a set-screw 8, which works, through stnoit ton nonifeming 5m of Letters Patent No. 707,225, aat ennu 'esetateoa G O J a citizen of" the Ui'riite dsStates,QI'eSiding atf .Houghtomfin the county of Hou'ghtonand State of Michligan, have'invented certain new 'and useful Improvements 'in'jExtension-Fittings for Leveling-Rods; .an'd-I dovidecl are' the 7 following tolbe a f nlhclearfand exact-descriptiou of the invention; such as'will'enable it appertains through the Q 'vELf eR 'D'sfi o -Ajiptieatib n filedDeceniher 9,1901; term] 1%. 85.27am) M1) f v aj'screwethreadeii apertureyi); fortified in. :the

collar, angLengages'the stem lO ofa-spring "plate Whichis adapted to be force d by the screw against the rod 2,1-to,1ock --s ai'd rotilrin adjusted position,

therodfl; The base or lower p'ortion of this casing 3,and'is SWiVGIBGgLO said "casing by auxiliary adjusting-screw 26..

the' fitting the rod 2v is'rslidfthrongh' the easan inch of the desired? adjnst nent and the collar 7 is then looked theretoi by operating bear against said rod; Then byzopera'ting' the of exactad-justmentg connection with theae'cotnpanyi-ng drawings,

tended exp1anation. 1 v.

F ;While the pr'eferredfforniof invention portion, andthe ininetfdetails"of constmiction tages; thereof.

I claim]- .The collar 7 is carried byfa depending-frarne 15, which fits and Slides, lwithin thefoasing 3 and encompasses the outer-face, andgsides of"- frame is formed with .a threaded opening 16, 7 through which works thethreaded end 17of an adjusting-screw 18; The screw works through a'sm'oothapertu're 19, formed inthe -6 5 forming thescrew witha firiedcollar-20,which is,v held against longitudinal movement by a plate 21." Thisfplate ZLisconneCted by pins or screws22-withthe casingaud with 'a split 70 formedwiththreadedQ-apertures' for the receptionoffthe screw-threaded end: 25' of an tthescrews to cause the spti ng p1ate 14 to h .80 i screwlS the SIidi'ngfrarne 1.5 may 'be mojved to set the rodtothe'exactadj'ustinent.v After" this .has heeudone the screwnl26is operated to causethe collar 23,toltigh-tlygriporclamp the screw18'tohold it against movement; by: which "the parts are prevented from. being disturbed by blowsor jshocks andmovedo'ut In operation -,w heng-i tisi'desiredto adjust"; A

,ing'to within approximately three eighths of From fhe foregoing description, taken in r 9 the "construction, mode ofoperatiOn, and ad-' "vantages of, the invention; it'is"thought,"wil1 5 be readilyapparentfwithout requiring an eX-I "951. isfas herein d'escr1bed,1t ,WIUOELBO'QI'SQLDB understood that various chaugesin'the'form,lpro- 1. The combination with the front and back leveling-rods; of a casing fixed to the front rod and through which the back rod slides, a collar slidably mounted upon the back rod above said casing, a frame sliding in the casing and fixed to the collar, a fastening carried by the collar for looking it in adjusted position on the back rod, and a screw swiveled to the base of the casing and working in said frame for setting the rod to exact adjustment after the collar has been locked thereto, substantially as set forth.

2. The combination with thefront and back leveling-rods; of a casing fixed to the front rod and through which the back rod slides, a collar mounted to slide upon the back rod above the casing, a frame sliding in the casing and' to which the collar is connected, means for locking the collar in adjusted position, a screw swiveled to the bottom of the casing and operatively connected to said frame for setting the rod to exact adjustment after the collar has been locked thereto, and means upon the casing for locking said screw tom of the casing, a plate closing said aperture, and means upon said plate for locking the screw in adjusted position, substantially as set forth.

V In testimony whereof I have hereunto set my hand in presence of two subscribing wit IIQSSBS.

GEO. S.-GOODALE. Witnesses:

MICHAEL FINN, WM. ANDERSON. 

